Real-time plot of vowel formants using LPC!

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Christopher Cox 2020-6-1

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https://ww2.mathworks.cn/matlabcentral/answers/539683-real-time-plot-of-vowel-formants-using-lpc

评论： UGUR SAMANCI 2023-1-9

Hi everyone!

I’m a speech scientist interested in developing a real-time vowel plot that reacts to a given speaker’s vowel production (i.e. formant frequencies) for an experiment I’m running. I’m used to programming in Python, so Matlab is slightly new to me, but the principles should be the same.

I need to estimate vowel formant frequencies using linear predictive coding (LPC), extract F1 and F2 in real time, and plot a small circle (with x-coordinates = F1, and y-coordinates = F2) on a grid/graph. The position of the circle should react to changes in real-time.

So far, I have used the Audio Toolbox to generate a real-time spectrum of the microphone input, but I’m unsure of how to extract and plot the frequency components in real time.

I’d appreciate any help that you may have!